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Restricting the Solubility of Polysulfides in Li‐S Batteries Via Electrolyte Salt Selection
Author(s) -
Chen Junzheng,
Han Kee Sung,
Henderson Wesley A.,
Lau Kah Chun,
Vijayakumar Murugesan,
Dzwiniel Trevor,
Pan Huilin,
Curtiss Larry A.,
Xiao Jie,
Mueller Karl T.,
Shao Yuyan,
Liu Jun
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201600160
Subject(s) - solvation , electrolyte , solubility , lithium (medication) , dimer , salt (chemistry) , ab initio , battery (electricity) , materials science , computer science , chemical physics , chemistry , thermodynamics , ion , physics , organic chemistry , electrode , medicine , power (physics) , endocrinology
Lithium 2‐trifluoromethyl‐4,5‐dicyanoimidazole as a supporting salt in electrolytes achieves a reduced Li 2 S 8 solubility by tuning the chemical production to Li 4 S 8 dimer. Ab initio molecular dynamics and nuclear magnetic resonance calculation confirms the solvation structure radius increase by 20%. Combined with Li 2 S 8 and LiNO 3 , the electrolyte can demonstrate a stable 300 cycling battery of practical sulfur loading.